Stx5-Mediated ER-Golgi Transport in Mammals and Yeast

Peter Ta Linders, Chiel van der Horst, Martin Ter Beest, Geert van den Bogaart*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

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Abstract

The soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) syntaxin 5 (Stx5) in mammals and its ortholog Sed5p in Saccharomyces cerevisiae mediate anterograde and retrograde endoplasmic reticulum (ER)-Golgi trafficking. Stx5 and Sed5p are structurally highly conserved and are both regulated by interactions with other ER-Golgi SNARE proteins, the Sec1/Munc18-like protein Scfd1/Sly1p and the membrane tethering complexes COG, p115, and GM130. Despite these similarities, yeast Sed5p and mammalian Stx5 are differently recruited to COPII-coated vesicles, and Stx5 interacts with the microtubular cytoskeleton, whereas Sed5p does not. In this review, we argue that these different Stx5 interactions contribute to structural differences in ER-Golgi transport between mammalian and yeast cells. Insight into the function of Stx5 is important given its essential role in the secretory pathway of eukaryotic cells and its involvement in infections and neurodegenerative diseases.

Original languageEnglish
Article numbercells8080780
Number of pages16
JournalCells
Volume8
Issue number8
DOIs
Publication statusPublished - 26-Jul-2019

Keywords

  • syntaxin 5
  • Golgi apparatus
  • endoplasmic reticulum
  • membrane trafficking
  • secretory pathway

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